Overall, a solid outing, though it was very inconsistent in some parts and actually read like Sina wasn't the writer. Bobby's voice changed too much since his last series, I don't know.
I'm not big on Bishop, so I wish anyone else had been the straight man, but overall the interaction was... fine.
For a story that heavily riffs off the Mutant Massacre, it seemed it had too much levity and ended too fast. That was to be expected in an Iceman 5-issue mini where the Morlocks are not (apparently) the main course, but it still seems kind of cheap.
I'm actually intrigued to see what's the business with Christian Frost and with Mr. Sinister, and if those two threads connect.